metric function

英 [ˈmetrɪk ˈfʌŋkʃn]

美 [ˈmetrɪk ˈfʌŋkʃn]

网络  度量函数

网络

英英释义

noun

• a function of a topological space that gives, for any two points in the space, a value equal to the distance between them
  Synonym:metric

双语例句

• In this paper we prove that a set of discontinuous points of a lower semi-Continuous function on a local Compact and countable metric space or a weak lower semi-continuous function on a reflexive Banach Space is a first Category.
  证明了局部紧且具有可数基的度量空间上的弱下半连续函数和自反的巴拿赫空间上的弱下半连续函数的间断点集合都是第一纲集。
• Therefore, the better adaptive margin metric ( named separation) and the fuzzy weighting technique were introduced for developing the new optimal objective function.
  为此，引入一个具有更好适应性的度量（称为分离度）和模糊加权技术构造新目标函数。
• Economist and educational Economist began metric study on economic function of education after in Soviet published "Economic Meaning of National Education ( 1924)" in 1920's.
  到了20世纪20年代，苏联的斯特鲁米林发表《国民教育的经济意义》（1924）之后，经济学家和教育经济学家就开始对教育经济功能进行计量研究。
• The article applied the method of process-result model and established a metric system based on knowledge production function.
  将结构化的过程&结果方法引入公益类科研机构绩效评价，建立了基于知识生产函数的测度体系。
• In metric space, by means of discussing boundedness of a function on a neighborhood of accumulation points of a sequential compact set S, give a way of judging boundedness of a function on the whole set S.
  在度量空间中，通过对函数在一个列紧集S的聚点附近的有界性讨论，给出了函数在整个点集S上有界性的判定方法。
• A simple formula of forming metric matrices is put forward. The simple variable matric algorithm produced from the formula is equivalent to the secant method and when the aim function is positive definite quadratic function, it is equivalent to BFGS.
  提出了构造尺度矩阵的一个简式公式，其对应的简式变尺度算法与正割法等价，当目标函数为正定二次函数时简式变尺度算法与BFGS方法等价。
• The conception of the covering numbers and the packing numbers and the metric entropy on a metric space were introduced, and the conception of the random distance and the random covering numbers and the random entropy on a function space were introduced.
  介绍了一般度量空间中覆盖数、包容数与度量熵的概念以及函数空间中随机距离、随机覆盖数与随机熵的概念。
• By considering a general harmonic, metric function Γ, gravitational and scalar potentials are explicitly given.
  对于一般的谐和函数给出了度规函数Γ、引力势和标量势的明晰的形式。
• A modified constrained variable metric algorithm using l_1-penalty function as merit function
  用L1－罚函数作线性搜索函数的一种修正约束变尺度算法
• This paper made a metric model of China life insurance demands function and imputed the income elasticity of China life insurance demands on the basis of the principles of life insurance and methodology of econometrics.
  本文运用保险学原理和计量经济学分析方法，建立了我国寿险需求函数的计量模型，并估算了我国寿险需求的收入弹性。